MH-66A4B IP57 Intrinsically Safe Speaker Mic
Motorola MH-66A4B IP57 Intrinsically Safe Speaker Mic: Submersible Voice for Hazardous-Duty VX & EVX Radios IP57 submersible · Intrinsically safe (FM/ATEX) · Noise-reducing mic · Glove-friendl...
Motorola MH-66A4B IP57 Intrinsically Safe Speaker Mic: Submersible Voice for Hazardous-Duty VX & EVX Radios
IP57 submersible · Intrinsically safe (FM/ATEX) · Noise-reducing mic · Glove-friendly PTT · 3.5 mm earjack · Motorola VX & EVX compatible
The Motorola MH-66A4B (Motorola part # AAE46X507) is a rugged, submersible speaker microphone rated IP57 and certified intrinsically safe, built for critical voice communication in hazardous and marine environments. It pairs with IS-rated Motorola VX and EVX series radios to keep audio clear and safety-approved on the toughest job sites. Browse the full range of compatible parts in EVX-S24 Accessories.
Who it's for
Built for crews running IS-rated Motorola VX/EVX radios underground, offshore, or in chemical and petrochemical plants where submersible, intrinsically safe audio gear is required. It is not ideal for radios outside the Motorola VX/EVX families or applications that do not need an intrinsically safe accessory. If you need a dedicated antenna for those radios, see the ATU-6D UHF 6 inch Antenna. Contact us to confirm fit before you buy.
Key features
- IP57 waterproof and dustproof: submersible in up to 1 m of water for 30 minutes and resistant to harsh, dusty conditions.
- Intrinsically safe certified: FM-approved for use with IS-rated Motorola/Vertex radios such as the ISVX-450 and EVX-530 series.
- Heavy-duty build: durable housing, a large PTT button operable with gloves, and a coiled cord for flexible reach.
- Noise-reducing mic: intelligent audio circuitry cuts ambient noise for clear voice transmission.
- 3.5 mm earphone jack: supports optional earpieces for secure, private listening.
- Wide compatibility: works with Motorola VX-261/VX-451/VX-454/VX-459 and EVX-261/531/534/539 (IS) radios.
Specifications
| Brand | Motorola |
|---|---|
| Part Number | AAE46X507 |
| Ingress Rating | IP57 (1 m for 30 min) |
| Safety Rating | Intrinsically Safe (FM/ATEX with IS-rated radios) |
| Earjack | 3.5 mm non-threaded |
| Mic Features | Noise reduction, large glove-friendly PTT |
| Compatibility | Motorola VX & EVX series (incl. IS models) |
| Warranty | 1 year replacement (typical) |
What's in the box
- MH-66A4B submersible speaker mic
- 6 ft coiled cord with quick-disconnect
- Swivel clothing clip
Frequently Asked Questions
Is the MH-66A4B a Motorola or a Vertex accessory?
The MH-66A4B is a Motorola accessory, Motorola part # AAE46X507. It is designed for Motorola VX and EVX series radios, including intrinsically safe (IS) models. Vertex/EVX terminology refers to the compatible radio lines, not the product brand.
What radios is the MH-66A4B compatible with?
It works with Motorola VX-261, VX-451, VX-454, and VX-459, plus EVX-261/531/534/539 (IS) radios, and is rated for IS radios such as the ISVX-450 and EVX-530 series. Contact us to confirm your exact model before ordering.
Is the MH-66A4B waterproof?
Yes. The MH-66A4B is rated IP57, making it dustproof and submersible in up to 1 m of water for 30 minutes.
Is the MH-66A4B intrinsically safe?
Yes. The MH-66A4B is certified intrinsically safe and FM-approved for use with IS-rated Motorola/Vertex radios, suiting it to hazardous environments such as chemical plants and offshore sites.
What comes in the box?
Each MH-66A4B ships with the submersible speaker mic, a 6 ft coiled cord with quick-disconnect, and a swivel clothing clip.
Detailed specifications are coming soon. In the meantime, here's the basics:
| Brand | 2Way Radio Solutions |
| Product Type | Accessories |
| SKU | — |
Full spec sheet: contact us at 1-800-507-6002
Shipping
- Free shipping over $125 · on qualifying U.S. orders
- Calculated at checkout · many items ship at weight-based rates
- Delivery estimate at checkout · based on item availability & method
- Ships across the U.S. · some products have shipping restrictions
Returns & warranty
- 15-day returns · most new, unopened items for a full refund
- Return shipping covered · if the item arrived incorrect or defective
- Refunds · typically within ~2 weeks of us receiving your return
- Manufacturer warranty · per the manufacturer’s terms
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